/Engine/Source/Editor/BlueprintGraph/Classes/K2Node_ConstructObjectFromClass.h
Takes the specified "MutatablePin" and sets its 'PinToolTip' field (according to the specified description)
void SetPinToolTip ( [UEdGraphPin](API\Runtime\Engine\EdGraph\UEdGraphPin) & MutatablePin, const [FText](API\Runtime\Core\Internationalization\FText) & PinDescription ) const